Mercruiser 5.0 Thermostat

[NYMINUTE]

Finishing my 4th season of boating, considering a thermostat change while performing winterization. Fresh water use only. Total hours around 100. Never had a problem. Good Idea or not?

 

[Don S]

Re: Mercruiser 5.0 Thermostat

Don't worry about a thermostat, what you need to change is the raw water pump impeller. Most boaters never have to change a thermostat, but ALL have to change the impeller within 2 to 5 years depending on the age of the boat, not the hours of the engine.

 

[Northern Eclipse]

Re: Mercruiser 5.0 Thermostat

Great advise Don... I would like to add that it may also be a good idea to inspect/replace u-joint and shift cable bellows also these components average about five years sometimes more and sometimes less, but when they do fail you may get that sinking feeling.

 

[NYMINUTE]

Re: Mercruiser 5.0 Thermostat

Thank you gentleman. These are the little things neglected in our owners manuals.

 

[crazy charlie]

Re: Mercruiser 5.0 Thermostat

NYM,I recommend that you make the change.A thermostat is an easy change and should be done to prevent failure .Though failure is a slim chance,there can be a clog or partial blockage or simple malfunction which I recently had..It is also a good thing to have the housing apart every once in a while so it will come apart if you need to do a repair.The other suggestions you got I agree with but the "leave it alone "I disagree on .Charlie